📒 Observation table — July 2026 Full weather archive →
| Date | Day | Morning t° | Day t° | Phenomena | Wind | Pressure | Humidity | My observations ✏️ |
|---|---|---|---|---|---|---|---|---|
| July 1 | Wed | +17° | +23° | 🌦 drizzle | 3.3 m/s | 766 mmHg | 57% | |
| July 2 | Thu | +19° | +21° | 🌦 drizzle | 7 m/s | 764 mmHg | 74% | |
| July 3 | Fri | +17° | +19° | ☁️ overcast | 4.2 m/s | 771 mmHg | 58% | |
| July 4 | Sat | +19° | +22° | ☁️ overcast | 5.1 m/s | 768 mmHg | 67% | |
| July 5 | Sun | +18° | +20° | 🌦 drizzle | 4.9 m/s | 766 mmHg | 76% | |
| July 6 | Mon | +20° | +24° | ⛅ cloudy | 5.8 m/s | 763 mmHg | 59% | |
| July 7 | Tue | +20° | +23° | ☁️ overcast | 5.5 m/s | 760 mmHg | 56% | |
| July 8 | Wed | +19° | +22° | ☁️ overcast | 3.6 m/s | 764 mmHg | 65% | |
| July 9 | Thu | +17° | +25° | ☀️ clear | 1.3 m/s | 764 mmHg | 53% | |
| July 10 | Fri | +18° | +27° | ⛅ cloudy | 2.8 m/s | 764 mmHg | 49% | |
| July 11 | Sat | +19° | +26° | ☀️ clear | 2.7 m/s | 766 mmHg | 55% | |
| July 12 | Sun | +19° | +27° | ☁️ overcast | 3.3 m/s | 768 mmHg | 44% | |
| July 13 | Mon | +19° | +26° | ☀️ clear | 3.3 m/s | 765 mmHg | 55% | |
| July 14 | Tue | +21° | +29° | ⛅ cloudy | 4 m/s | 764 mmHg | 36% | |
| July 15 | Wed | +20° | +28° | ☀️ clear | 4.4 m/s | 766 mmHg | 36% | |
| July 16 | Thu | +20° | +25° | ⛅ cloudy | 1.9 m/s | 764 mmHg | 49% | |
| July 17 | Fri | +18° | +22° | ☁️ overcast | 3.6 m/s | 761 mmHg | 61% | |
| July 18 | Sat | +18° | +19° | ☁️ overcast | 4.2 m/s | 763 mmHg | 62% | |
| July 19 | Sun | +16° | +19° | ☀️ clear | 5 m/s | 766 mmHg | 52% | |
| July 20 | Mon | +16° | +19° | ⛅ cloudy | 4.3 m/s | 769 mmHg | 56% | |
| July 21 | Tue | +15° | +20° | ☁️ overcast | 3.2 m/s | 770 mmHg | 58% | |
| July 22 | Wed | +16° | +19° | 🌦 drizzle | 6.2 m/s | 768 mmHg | 67% | |
| July 23 | Thu | +17° | +19° | ☁️ overcast | 4.1 m/s | 766 mmHg | 69% | |
| July 24 | Fri | +16° | +23° | ⛅ cloudy | 1.4 m/s | 763 mmHg | 53% | |
| July 25 | Sat | +18° | +24° | ☀️ clear | 3.3 m/s | 756 mmHg | 55% | |
| July 26 | Sun | +19° | +20° | 🌦 drizzle | 5.9 m/s | 752 mmHg | 87% | |
| July 27 | Mon | +17° | +20° | 🌦 drizzle | 5.6 m/s | 762 mmHg | 70% | |
| July 28 | Tue | — | — | — | — | — | — | |
| July 29 | Wed | — | — | — | — | — | — | |
| July 30 | Thu | — | — | — | — | — | — | |
| July 31 | Fri | — | — | — | — | — | — |
🌤 Now in Leiden
🧑🏫 How to keep a weather diary
- Pick an observation time — the same every day, for example 8:00 and 14:00.
- Write down the temperature — from the thermometer outside or from our table (weather-station data).
- Note the phenomena — clear ☀️, cloudy ⛅, overcast ☁️, rain 🌧, thunderstorm ⛈, snow ❄️.
- Add wind and pressure — for younger students “light/strong” is enough, older students write m/s and mmHg.
- Sum up at the end of the month — the warmest and coldest day, how many days had precipitation. Check yourself against the weather archive.
❓ Frequently asked questions
What do you write in a school weather diary?
The date, morning and daytime temperature, phenomena (clear/cloudy/rain), wind and pressure. For younger students temperature and phenomena are enough, older students add wind in m/s, pressure and humidity. Ready values for Leiden are already filled into the table above (27 days filled).
Where do I get the data if I missed a day or a month?
Past days in the table are filled with actual weather-station readings for Leiden. Previous months — via the ← arrow or the month list above the table, earlier ones — in the weather archive. Weather archive →
How do I print a blank template?
Click “Blank sheet (fill in by hand)” — a separate page opens with an empty table (dates and weekdays stay), with a “Print” button on it.
Weather diary in Leiden — in detail
A weather diary is a table of daily observations: air temperature, precipitation, wind, atmospheric pressure and cloud cover. Schoolchildren keep it for science and geography classes, and so do gardeners and anglers. Data for Leiden is filled in automatically from weather-station readings: past days always contain facts, not forecasts, so you can check your own records against the table.
July in Leiden. Compare your records with the city archive and climate, see the current weather on the city page, the forecast — for the week. All cities — in the weather diary by city.